2 years ago

Which has the greatest absolute value? a. -15 b. 25 c. -40 d. 10

1 answer:

4 0

|-15| = 15

|25| = 25

|-40| = 40

|10| = 10

The absolute value of a negative or positive number will always be positive.

c. -40 will have the greatest absolute value.

Your final answer is c. -40.

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(a^2-b^2) (c^2-d^2) +4abcd

Vikki [24]

$a^{2} {c}^{2} - {a}^{2} {d}^{2} - {b}^{2} {c}^{2} + {b}^{2} {d}^{2} + 4abc$

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2 years ago

Sandra normally takes 2 hours to drive from her house to her grandparents' house driving her usual speed. However, on one partic

Rudiy27

Answer:

Her usual driving speed is 38 miles per hour.

Step-by-step explanation:

We know that:

$s = \frac{d}{t}$

In which s is the speed, in miles per hour, d is the distance, in miles, and t is the time, in hours.

We have that:

At speed s, she takes two hours to drive. So

$s = \frac{d}{2}$

$d = 2s$

However, on one particular trip, after 40% of the drive, she had to reduce her speed by 30 miles per hour, driving at this slower speed for the rest of the trip. This particular trip took her 228 minutes.

228 minutes is 3.8 hours. So

$0.4s + 0.6(s - 30) = \frac{d}{3.8}$